1, if you have previously logged in to save your Sina mailbox account, bring it to send an email, and found that the official will give you back a mailbox error.

2, if you try to log in again, you can no longer log in to Sina mailbox with that cell phone number. It will tell you that the login name or password is wrong.

3. What can you do then? You can use your account to log in to the Sina website. Then there is a "mailbox" in the upper right corner, and there is a free mailbox in the drop-down list.

4, point in can be re-logged.

5, at this time you will find that, although the previous cell phone number mailbox is not used, but there is also a mailbox, this mailbox does not need a cell phone number. It is automatically generated for you, but some of the numbers inside the mailbox name are cell phone numbers.

6, at this point you can not need a cell phone number, log in to Sina mailbox, free to use Sina mailbox.